CN103258365B - Magnetic sensor for coin recognition - Google Patents

Abstract

A kind of magnetic sensor for coin recognition, including: have and measure peristome that the coin of object passes through and the coreplane of the magnetic material plate body towards the prominent multiple protuberances of this peristome；And it is located at the multiple coils above and below by the coin of the peristome of coreplane, wherein form whole coil with the protuberance of coreplane for magnetic core.Offset to eliminate the position of magnetic core, form the magnetic core of whole coil with the coreplane of a plate body.

Description

Magnetic sensor for coin recognition

Technical field

The present invention relates to for measuring the coin recognizing method magnetic of the magnetic characteristic of the coin of utilization in coin recognizing method Sensor.

Background technology

In the past, in the Coin processor identifying counting carrying out coin, utilize for measuring coin The magnetic sensor for coin recognition of magnetic characteristic.Measure coin magnetic characteristic, such as determine coin thickness, Diameter and material, thus carry out cash category identification and truth identification.

Such as, in patent documentation 1, disclose the coin recognizing method of the infiltration type utilizing three coils to constitute Use Magnetic Sensor.In this sensor, below transport path, configure a magnet exciting coil, at transport road Position corresponding with magnet exciting coil above the coin of conveying on footpath configures two detection coils.Then, pass through Detection Coil Detector coin is by the change by the magnetic flux produced in the excitatory magnetic field of magnet exciting coil.

And, Patent Document 2 discloses to measure and make use of the infiltration type of five coils and reflection-type The magnetic sensor for coin recognition of both changes of magnetic field.In this sensor, the magnet exciting coil of reflection-type (primary coil) and detection coil (secondary coil), the magnet exciting coil (primary coil) of two infiltration types It is configured in below transport path, with infiltration type magnet exciting coil pair above the coin carried on transport path The detection coil (secondary coil) of two infiltration types of position configuration answered.Then, except carrying out through magnetic field The detection of change, also by reflection-type detection Coil Detector due to excitatory by reflection-type magnet exciting coil Coin in produce vortex flow and the change of magnetic flux that causes.

Patent documentation 1:(Japan) Unexamined Patent 7-220133 publication

Patent documentation 2:(Japan) No. 3363290 publication of special permission

But, according to above-mentioned prior art, there is each portion owing to constituting magnetic sensor for coin recognition The foozle of part and assembly error when utilizing multiple coil to assemble Magnetic Sensor and at sensor characteristics The situation of middle generation variability (ば ら つ I).

Such as, magnetic sensor for coin recognition configures assembling infiltration type excitation in resinous sensor box Coil, infiltration type detection coil, reflection-type magnet exciting coil and reflection-type detect coil, for processing from encouraging The circuit substrate etc. of the signal that the driving of magnetic coil and detection coil obtain.At this moment, exist due to each portion The foozle of part and assembly error time each coil groups is installed to sensor box, the position of each coil Produce the situation of skew.

Specifically, exist magnet exciting coil and the position relationship of detection coil, above transport path side by side The position relationship of two infiltration type coils, infiltration type coil and the position relationship etc. of reflection-type coil arranged The probability of skew., there is generation variability in sensor characteristics in its result, sensor performance reduces Situation.

And, coil is to be wrapped on the magnetic core being made up of magnetic material as coiling by covered wire Formed, but on multiple magnetic cores, be wound around coiling, and then in each coil groups is installed to sensor box The operation manufacturing magnetic sensor for coin recognition is to spend time taking operation.And, each coil will be formed The two ends of coiling be welded on the operation on the circuit substrate being configured in sensor box when being to spend too Between operation.Therefore, the manufacture of magnetic sensor for coin recognition spends time and cost.

Summary of the invention

The present invention is in order to solve above-mentioned problem of the prior art point and to complete, and its object is to provide A kind of easy manufacture and the sensor performance that the variability of the position relationship because of each coil causes can be suppressed The magnetic sensor for coin recognition of reduction.

In order to solve above-mentioned problem, achieving the goal, the present invention is magnetic sensor for coin recognition, its feature It is, including: the coreplane of magnetic material plate body, there is the opening identifying that the coin of object passes through Portion and the multiple protuberances highlighted towards this peristome；And multiple coil, it is arranged on by described peristome Coin above and below, whole described coils are formed with the protuberance of described coreplane as magnetic core.

And, it is a feature of the present invention that in the present invention as stated above, utilize to clip opposed described convex in space Portion be the described coil of magnetic core to form at least one infiltration type Magnetic Sensor, comprise this infiltration type magnetic sensing The magnetic circuit of device forms closed loop.

And, it is a feature of the present invention that in the present invention as stated above, on described coreplane, by described The top of the coin of peristome forms two protuberances, at three protuberances formed below of described coin, described Coil includes: two described protuberances above coin are as two infiltration types of core FCl coiling Detection coil；Using the central protuberance in three described protuberances below coin as core FCl coiling Reflection-type detection coil；And with three described protuberances below coin for core FCl coiling, in order to will Whole three described protuberances are included in the magnet exciting coil of inner side.

And, it is a feature of the present invention that in the present invention as stated above, also include: resin-made cartridge type shape upper Lateral coil coil rack, has the through hole making the described protuberance above coin through, described infiltration type Detection coil is on described when being in the through described through hole of described protuberance above coin It is wound around coiling on lateral coil coil rack and is formed.

And, it is a feature of the present invention that in the present invention as stated above, also include: resinous lower lateral coil is used Coil rack, has the through hole making three described protuberances below coin through, and described reflection-type detects Coil and described magnet exciting coil are to be in the through described through hole of below coin three described protuberances It is wound around coiling on described lower lateral coil coil rack under state and is formed.

And, it is a feature of the present invention that in the present invention as stated above, described lower lateral coil coil rack has Side convex shape, described reflection-type detection coil is by the central projection in described side convex shape Dividing and be wound around coiling and formed, described magnet exciting coil is by being wound around in the lower portion of described side convex shape Coiling and formed.

And, it is a feature of the present invention that in the present invention as stated above, described coreplane passes through permalloy plate shape Become.

And, it is a feature of the present invention that in the present invention as stated above, described coreplane has described plate body The shape of a part of otch so that measure described peristome and described coreplane that the coin of object passes through Ft connection.

According to the present invention, owing to the whole magnetic cores utilized in detecting in magnetic characteristic are as a coreplane Protuberance comes integrally formed, it is possible to it is inclined to eliminate the position to the magnetic core that sensor characteristics produces considerable influence Move.

And, according to the present invention, integrally formed coreplane will clip opposed convex in space by utilizing Portion forms infiltration type Magnetic Sensor as the coil of magnetic core, even if forming multiple infiltration type Magnetic Sensors In the case of, it is possible to so that the interval in gap between magnet exciting coil and detection coil is uniform, it is possible to make Transducer sensitivity is uniform.And, by utilizing a coreplane, include through the magnetic of type Magnetic Sensor Road becomes closed loop circuit, it is possible to the detection coin change by produced magnetic flux in high sensitivity.

And, according to the present invention, utilize a coreplane, can not be produced each sensor of composition each The skew ground, position of coil forms two infiltration type Magnetic Sensors and 1 reflection-type Magnetic Sensor.

And, according to the present invention, owing to utilizing upper lateral coil coil rack to form infiltration type detection line Circle, so by the upper lateral coil coil rack being wound with coiling in advance is assembled into coreplane, permissible Easily assemble coil.

And, according to the present invention, owing to a lower lateral coil coil rack can be utilized to form reflection Type detects coil, for encouraging the magnetic field of utilization in infiltration type detection coil and reflection-type detection coil Magnet exciting coil, it is possible to reduce number of components.And, by by be wound with in advance each coil around The lower lateral coil coil rack of line is assembled on coreplane, can easily assemble coil.

And, according to the present invention, it is wound around by the bottom of the lower lateral coil coil rack at side convex The coiling of magnet exciting coil, is wound around the coiling of reflection-type detection coil, can pass through at central projection The magnetic field that magnet exciting coil excitation utilizes in infiltration type detection coil and reflection-type detection coil, passes through The magnetic characteristic of reflection-type correctly measured by reflection-type detection coil.

And, according to the present invention, by utilizing permalloy in coreplane, can become high performance Magnetic sensor for coin recognition.

And, according to the present invention, owing on coreplane, formation is connected to the magnetic characteristic of measurement coin Notch outside peristome and coreplane, even if so be provided with coin recognizing method magnetic on transport path After sensor, it is also possible to the readily replaceable conveyer belt utilized in transport path.

Accompanying drawing explanation

Fig. 1 is the figure utilizing example of the magnetic sensor for coin recognition representing the present invention.

(a)～(b) of Fig. 2 is magnetic sensor for coin recognition and the transport path representing present embodiment The figure of position relationship.

Fig. 3 is the block diagram of the architectural overview of the magnetic sensor for coin recognition representing present embodiment.

Fig. 4 is the axonometric chart of the outward appearance of the magnetic sensor for coin recognition representing present embodiment.

Fig. 5 is the figure of the component parts of the magnetic sensor for coin recognition representing present embodiment.

Fig. 6 is the axonometric chart representing each coil formed on the coreplane of present embodiment.

Fig. 7 is the figure representing the method forming each coil on the coreplane of present embodiment.

(a)～(b) of Fig. 8 is the figure of the shape of the coreplane representing present embodiment.

Fig. 9 is the figure of the position relationship representing the coreplane of present embodiment and conveying.

Figure 10 is to represent to utilize difform magnetic in the magnetic sensor for coin recognition of present embodiment The figure of the example of central layer.

Label declaration

1 magnetic sensor for coin recognition

1a, 1b sensor box

10 coreplanes

11a, 11b upper lateral coil coil rack

12a, 12b infiltration type detection coil

13 times lateral coil coil racks

14 magnet exciting coils

15 reflection-type detection coils

20 circuit substrates

21 pwm circuits

22 wave filter

23 drivers

24 amplifiers

25 A/D converters

26 memorizeies

27 coin recognizing method process portions

28 temperature sensors

30 conveyings

30a transparent component

40 sealing plates

51-56 connecting rod (terminal pin)

100 transport paths

101 coins

102 conveyer belts

Detailed description of the invention

Hereinafter, with the present invention relevant magnetic sensor for coin recognition is explained in detail with reference to the accompanying drawings.Fig. 1 is The profit of the magnetic sensor for coin recognition 1 (set forth below is " Magnetic Sensor ") in expression Coin processor The schematic diagram of use-case.In Fig. 1, the profile of Magnetic Sensor 1 is represented by dashed line, represents to magnetic with chain-dotted line Transport path 100 in the Coin processor of sensor 1.

Magnetic Sensor 1 is internal has 1 coreplane 10.Coreplane 10 is by the magnetic for forming coil The plate body that the magnetic material of core is constituted, details is described later.By a part of region at this coreplane 10 The protuberance formed, as magnetic core, forms two infiltration type detection coil 12a and 12b, reflection-type detection coil 15 and these four lines of magnet exciting coil 14 as infiltration type magnet exciting coil and reflection-type magnet exciting coil action Circle.So, by measuring magnetic characteristic by infiltration type and reflection-type, it may be determined that the thickness of coin, Diameter and material, thus carry out cash category identification and truth identification.

Infiltration type detection coil 12a is by the upper lateral coil line in the four square tubular shapes with through hole The coiling of insulation-coated copper cash it is wound around, by the passing through of lateral coil coil rack 11a on this on ring framework 11a Through hole is formed by the protuberance of coreplane 10.Infiltration type detection coil 12b utilize too be wound with around The upper lateral coil coil rack 11b of line and formed.

Reflection-type detection coil 15 and magnet exciting coil 14 utilize lower lateral coil coil rack 13 shape Become.Lower lateral coil coil rack 13 has following shape, i.e. in the both sides of four square tubes with through hole, Four short for this four square tube of through hole direction ratio square tubes are each alignd bottom surface and integral part of side convex shape Shape.Three through holes of lower lateral coil coil rack 13 and the protuberance of each self-corresponding coreplane 10 Join formation.But, present embodiment is not limited to this, as long as can be wound around anti-on the top of coil rack The coiling of emitting detection coil 15, is wound around the coiling of magnet exciting coil 14, then descends lateral coil line in bottom Ring framework 13 can also have other shape.

Then, in lower lateral coil coil rack 13, at the protuberance forming side convex shape central authorities Four square tube tops be wound around reflection-types detection coils 15 coiling, there is the convex of three through holes in inside Lower area is wound around the coiling of magnet exciting coil 14.By three of this lower lateral coil coil rack 13 In through hole, through three protuberances of corresponding coreplane 10, form reflection-type detection coil 15 and encourage Magnetic coil 14.

The Magnetic Sensor 1 magnet exciting coil 14 on the downside of coreplane 10 and reflection-type detection coil 15 and on Between infiltration type detection coil 12a and 12b of side, the conveying direction of coin 101 has in conveying The peristome that the coin 101 carried on path 100 passes through.Enter when coin 101 is by this peristome The measurement of row magnetic characteristic.

Fig. 2 is the figure of configuration status Magnetic Sensor 1 being described on transport path 100.Fig. 2 (a) is The figure of Magnetic Sensor 1 seen from above, Fig. 2 (b) is the figure of Magnetic Sensor 1 from the side.Such as Fig. 2 (a) With Fig. 2 (b) Suo Shi, in transport path 100, by have bossed conveyer belt 102, to arrow Shown conveying direction conveying coin 101.Magnetic Sensor 1 discharges the part above transport path 100 Region, in order to the installation and removal of conveyer belt 102 can also be carried out after transport path 100 is set to. In order to realize this situation, as it is shown in figure 1, coreplane 10 has a part of otch of coreplane 10 Shape, in order to connect peristome and coreplane 10 outside that coin 101 passes through.

Fig. 3 is the functional-block diagram of the architectural overview representing Magnetic Sensor 1.Magnetic Sensor 1 has formation The coreplane 10 of multiple coils and circuit substrate 20.In coreplane 10, formed as starting of oscillation coil Magnet exciting coil 14 and as receiving coil infiltration type detect coil 12 and reflection-type detection coil 15。

As it is shown on figure 3, circuit substrate 20 has: generation has such as synthesized the pulse signal of 3 frequencies Pwm circuit 21, for removing unwanted high frequency division in the pulse signal that generated by pwm circuit 21 Measure and generate the wave filter 22 of the analogue signal being applied to coil and to the mould generated by wave filter 22 Intend signal to be amplified and be applied to the driver 23 of magnet exciting coil 14.And, in circuit substrate 20 Have: for the signal detected by infiltration type detection coil 12 and reflection-type detection coil 15 is put Big amplifier 24, for the signal after being amplified being carried out the A/D conversion of A/D conversion by amplifier 24 Device 25, for preserve from A/D converter 25 output digital signal memorizer 26, utilize memorizer The signal preserved in 26 carries out the coin recognizing method process portion 27 of coin recognizing method and in order to consider that temperature is carried out The correction of measurement result and be connected to the temperature sensor 28 in coin recognizing method process portion 27.At coin recognizing method Reason portion 27 carries out, for the signal measured from detection coil 12 and 15, extracting and pwm circuit 21 The FFT of each signal that the frequency component of composite signal that generates is corresponding, and based on obtain each The coin recognizing method of signal etc. process.Process about these, such as, can utilize International Publication the Prior art disclosed in No. 2010/052798, so omitting detailed description.And, Magnetic Sensor 1 There is the signal 29 by utilizing in the identification of coin 101 defeated to external device (ED) from coin recognizing method process portion 27 The function gone out.

Fig. 4 is the axonometric chart of an example of the face shaping representing Magnetic Sensor 1.Biography at Magnetic Sensor 1 The side of sensor box 1a and 1b be provided with for prevent from be positioned at Coin processor motor and The sealing plate 40 of the magnetic noise of solenoid etc..And, Magnetic Sensor 1 has by being arranged on sensor box The conveying 30 that reinforcement (rib) 1c on 1a and 1b supports.Magnetic Sensor 1 is arranged on coin In processing means so that the transport path 100 of the above formation Coin processor of this conveying 30 A part for conveyor surface.

Conveying 30 has through hole, at through hole in a part for the conveyor surface of conveying coin 101 In embedded in transparent component 30a.In Coin processor, in the throwing setting up and down of this transparent component 30a Light portion and light receiver.Then, by being detected that the light projected by light-projecting portion is by transport road by light receiver The situation that the coin 101 that footpath 100 conveying comes blocks, determines the process timing of coin recognizing method.And, The 50 of Japan say unit's coin porose on coin like that in the case of, detected by light-projecting portion and light receiver To the existence in this hole, can be used in coin recognizing method.

And, as the material of conveying 30, preferably by hard resin, such as PPS (polyphenylene sulfide Ether) resin, in order to will not because of coin 101 by and wear and tear.And, conveying 30 preferably prevents Produce the material of electrostatic, so as to the magnetic characteristic of the coin 101 that correct measurement passes through above it.Cause This, such as, when utilizing PPS resin to form conveying 30, become led by additional electroconductive particle Electrically hard resin.And, as transparent component 30a, such as, utilize allyl resin.

Fig. 5 is the figure illustrating to constitute each element of Magnetic Sensor 1.So, at sensor box 1a With the inside of 1b, it is included in Fig. 1 and coreplane illustrated in fig. 3 10 and the circuit being illustrated in Figure 3 , substrate 20.

First, assemble in the sensor box 1a that the coreplane 10 of conveying 30 is assembled into. Then, in then circuit substrate 20 is assembled into sensor box 1a, to cover coreplane 10.Circuit base Plate 20 is fixed relative to sensor box 1a by Screw 20e.Then, another side is assembled further Fixed by primary screw 1d after sensor box 1b, in order to close sensor box 1a.And, Sealing plate 40 is assembled outside sensor box 1a.

As the material of sensor box 1a and 1b preferably by hard resin, such as, utilize PPS resin. And, as the material of coreplane 10, and magnetic material that coercive force little big preferably by initial permeability Alloy, such as, utilize the PC2 that permalloy etc. specifies in JIS-C-2531 (the JIS standard of Japan) Plant alloy.And, coreplane 10 both can be the lamina of a few mm, it is also possible to be bonded multiple thin The laminate of plate.

Fig. 6 is the axonometric chart representing the coil formed on the coreplane 10 shown in Fig. 5.As it is shown in figure 5, When assembling Magnetic Sensor 1, as shown in Figure 6, in advance by upper lateral coil coil rack 11a and 11b and lower lateral coil coil rack 13 are assembled on coreplane 10.

Fig. 7 be represent the coreplane 10 shown in Fig. 6, upper lateral coil coil rack 11a and 11b, under The lateral coil figure of the assembled state of coil rack 13.Upper lateral coil coil rack 11a has two companies Extension bar 51a and 52a.After infiltration type detection coil 12a is by being wrapped in coiling in connecting rod 51a, twine It is wound on lateral coil coil rack 11a, and then is wrapped in connecting rod 52a and is formed.So, It is wound around and is fixed on another end in connecting rod 51a with an end of coiling to be wound around and the company of being fixed on State on extension bar 52a, upper lateral coil coil rack 11a is assembled on coreplane 10.Upper side line Circle with coil rack 11b too, is wrapped in connecting rod 51b another with an end of coiling The state that end is wrapped in connecting rod 52b is assembled on coreplane 10.

And, lower lateral coil coil rack 13 has: two companies being utilized in magnet exciting coil 14 Extension bar 53 and 54, two connecting rods 55 and 56 being utilized in reflection-type detection coil 15.Excitation After coil 14 is by being wrapped in coiling in connecting rod 53, it is wrapped in lower lateral coil coil rack 13 On, and then be wrapped in and formed in connecting rod 54.And, reflection-type detection coil 15 is too, logical Cross after coiling is wrapped in connecting rod 55, be wrapped on lower lateral coil coil rack 13, and then It is wrapped in and is formed in connecting rod 56.So, it is wound around also with each end of the coiling of magnet exciting coil 14 It is fixed in connecting rod 53 and 54 and each end of coiling of reflection-type detection coil 15 is wound around and fixes State in connecting rod 55 and 56, lower lateral coil coil rack 13 is assembled on coreplane 10.

And, coiling is the insulated electric conductor making surface insulation, such as, utilize polyurethane copper cash etc. Enamel-covered wire.And, the line footpath of coiling need not in whole coils the most identical with the number of turn.Such as, encouraging In magnetic coil 14, compared with infiltration type detection coil 12a and 12b, reflection-type detection coil 15, permissible The line footpath of overstriking coiling or the minimizing number of turn.

And, as upper lateral coil coil rack 11a and 11b, lower lateral coil coil rack 13 Material, preferably by indeformable hard resin material under the stress when being wound around coiling, such as, with biography Sensor box 1a and 1b is also with PPS resin.And, as the material of connecting rod 51～56, utilize Conductive metal material.

As it is shown in figure 5, on circuit substrate 20, arrange lateral coil coil rack 11a and 11b, Through hole 20a～20d that each connecting rod 51～56 of lower lateral coil coil rack 13 passes.Each passes through Through hole 20a～20d utilizes conductive metal material gold-plated on copper to be formed, right with on circuit substrate 20 The circuit answered connects.

Specifically, connecting rod 51a and the 52a of the winding end portion of infiltration type detection coil 12a are secured The through hole 20a that passes, secure the winding end portion of infiltration type detection coil 12b connecting rod 51b and The amplifier 24 shown in through hole 20b with Fig. 3 that 52b passes is connected.And, secure reflection-type inspection The through hole 20c that the connecting rod 55 and 56 of the winding end portion of test coil 15 passes too with amplifier 24 Connect.Further, the through hole that the connecting rod 53 and 54 of the winding end portion securing magnet exciting coil 14 passes Driver 23 shown in 20d with Fig. 3 is connected.

In Magnetic Sensor 1, in sensor box 1a, assemble coreplane 10 He as shown in Figure 5 During circuit substrate 20, each connecting rod 51～56 from the surface of circuit substrate 20 to sensor box 1b pleurapophysis Go out.The coiling being fixed in each connecting rod 51～56 after forming each coil is capped exhausted in surface Edge electric wire.But, each through hole 20a～20d of circuit substrate 20 is each with highlight from each hole When individual connecting rod 51～56 carries out welding (flow soldering), caused the covering of insulated electric conductor by thermal conductance Melting layer, turns between each connecting rod 51～56 and coiling.Its result, by connecting rod once Weld job, the coiling of the coil can simultaneously make connecting rod, being fixed in this connecting rod and formation Corresponding circuit on circuit substrate 20 is electrically connected.

So, utilize the connecting rod 51～56 being arranged on coil rack and be arranged on circuit substrate 20 Through hole 20a～20d, can easily carry out each coiling forming coil is welded on circuit substrate 20 On operation.Make use of the operation of the connecting rod than coiling hard by making weld job become, thus weld Connect operation and can easily realize automatization.

As it is shown in fig. 7, upper lateral coil coil rack 11a and 11b, lower lateral coil coil rack 13 It is assembled on coreplane 10.Specifically, assembling is in the upper side line of the state being wound with coiling in advance Coil rack 11a used by circle so that on the upside of coreplane 10, a protuberance 10a passes the through of this coil rack Hole.Equally, assemble the upper lateral coil coil rack 11b being in the state being wound with coiling in advance, make Obtain the through hole through this coil rack of another protuberance 10b on the upside of coreplane 10.And, at assembling Lower lateral coil coil rack 13 in the state being wound with coiling in advance so that on the downside of coreplane 10 The protuberance 10d in centre portion is through the through hole of the central part of this coil rack, and makes on the downside of coreplane 10 Two protuberance 10c and 10e pass the through hole of each self-corresponding coil rack.

Its result, infiltration type detection coil 12a becomes with the protuberance 10a of coreplane 10 as magnetic core Coil, another infiltration type detection coil 12b becomes the coil with the protuberance 10b of coreplane 10 as magnetic core. And, reflection-type detection coil 15 becomes the upper area of the protuberance 10d with coreplane 10 as magnetic core Coil.

And, magnet exciting coil 14 becomes the coil with three protuberance 10c～10e of coreplane 10 as magnetic core. That is, magnet exciting coil 14 is not the coil being wound around coiling in each of three protuberance 10c～10e respectively, But survey winding coiling to be integrally incorporated in interior by these three protuberances at the outer of three protuberance 10c～10e Coil.

In Magnetic Sensor 1, can be by 1 magnet exciting coil 14 to three detection coil stimulating magnetic fields. Specifically, infiltration type can be detected by the protuberance 10c of coreplane 10 by driving magnet exciting coil 14 Coil 12a excitation field, is detected coil 12b excitation field by protuberance 10e to infiltration type.And, can Reflection-type is detected coil 15 excitation field by protuberance 10d.

Fig. 8 is to represent the shape of coreplane 10 and as the figure of relation of the coin diameter measuring object.As Shown in Fig. 8 (a), coreplane 10 has otch 10f in a part for profile.By this otch 10f, Can easily judge the positive and negative, upper and lower of coreplane 10 and left and right, it is possible to easily make as shown in Figure 7 Upper lateral coil coil rack 11a and 11b and lower lateral coil coil rack 13 are assembled into coreplane The operation of operation on 10 and as shown in Figure 5 assembling Magnetic Sensor 1 realizes automatization.

The gap size b of the peristome that the coin 101 as shown in Fig. 8 (a) passes through is according to becoming magnetic sensing The multiple coins measuring object of device 1 have the thickness a of the coin 101 of maximum gauge and by coreplane The wall thickness t of the corresponding part of the 10 sensor box 1a being housed in inside determines.Such as, will be located in firmly The wall thickness of the corresponding part of the upper and lower sensor box 1a of coin 101 is set to t (mm), by maximum When coin thickness is set to a (mm), the gap size b of coreplane 10 is preferably than t × 2+a (mm) Big about 1mm.Specifically, at the corresponding wall thickness t=0.5mm of part of sensor box, coin In the case of big thickness a=2.5mm, gap size is preferably 4～about 5mm.

And, about the shape of coreplane 10, in order to correctly measure the magnetic characteristic of coin 101, set The size of various piece, in order to do not utilize Fig. 8 left and right directions (coin diameter side of the magnetic core of each coil To) end, two ends.This is because in the sensitivity decrease of magnetic core end sensor.Specifically, such as figure Shown in 8 (a), from protuberance 10c and 10e of the coreplane 10 that the magnetic core as magnet exciting coil 14 works Left and right directions outside two ends rise, to as measuring in multiple coins of object, there is the coin of maximum gauge Size c and d till the corresponding outer circumference end of the radial direction of 101 are set to respectively more than 1mm.Example As, in the case of the maximum gauge of coin 101 is 26.5mm, protuberance 10c and 10e of coreplane 10 Coin radial outside two ends between size W1 be set to more than 28.5mm (=26.5+2).

And, as shown in Fig. 8 (b), about the right and left from protuberance 10c and 10e of coreplane 10 Start, to becoming survey to (being left and right (right angle) direction relative to the conveying direction of coin) medial end Size e till the corresponding end of the coin 101 in multiple coins of amount object with minimum diameter and F, is again set at respectively becoming more than 1mm.Specifically, such as at the minimum diameter of coin 101 In the case of 20.0mm, size W1 as shown in Fig. 8 (a) is 28.5mm, Fig. 8 (b) institute Size W2 of protuberance 10c and 10e shown and W3 be respectively set at 9.5mm (=28.5-20+1) with On.Such as, W2 and W3 is sized to 10mm.

And, the position of Fig. 8 left and right directions during conveying coin 101 changes according to feed status.Cause This, preferably limit by the transfer position of the coin 101 during coreplane 10.

Fig. 9 is each protuberance of the coreplane 10 in the case of the transfer position representing restriction coin 101 The figure of the position relationship of 10a～10e and conveying 30.So, magnetic is passed through by conveying 30 restriction The position of Fig. 9 left and right directions of the coin 101 during the peristome of central layer 10.Specifically, specify, Make the conveying of two ends to restriction coin position outside the protuberance 10c from coreplane 10 and 10e left and right directions Size c and d till the corresponding sidewall of guide rail 30 are more than 1mm.Thus, it is possible to avoid in spirit The magnetic characteristic of coin 101 is measured in the magnetic core end that sensitivity is low.

About the shape of coreplane 10, for acting as the magnetic core of infiltration type detection coil 12a and 12b Protuberance 10a and 10b, Fig. 8 left and right directions two ends, outside position such as Fig. 8 (a) shown in, shape Become identical with the position at the two ends, outside of protuberance 10c and 10e of magnet exciting coil 14 side.And, for The position of the medial end of Fig. 8 left and right directions of protuberance 10a and 10b, as shown in Fig. 8 (b), also shape Become identical with the position of the medial end of protuberance 10c and 10e in the end towards coin 101.

In the present embodiment, it is shown that the part on the upside of coreplane 10 has the shape of incision, with Just can easily change the situation of conveyer belt 102, but the shape of coreplane 10 is not limited to this.Specifically For, as shown in Figure 10, coreplane 10 can also have retain rectangular flat periphery all-round and for The protuberance of formation coil, and the shape of the peristome molding that coin 101 is passed through.In this case, remove It is possible to prevent the position of each magnetic core to offset, detects coil 12a also by magnet exciting coil 14 and infiltration type With the magnetic circuit that 12b forms closed loop, it is possible to become highly sensitive infiltration type Magnetic Sensor.

As it has been described above, according to present embodiment, utilize the coreplane 10 of a tabular, formed to be formed at Protuberance 10a～10e on coreplane 10 is multiple coils of magnetic core, so the position of each coil is the most partially Move, the variability of the Magnetic Sensor 1 caused because of the assembly error of coil can be suppressed.And, by inciting somebody to action The coil rack being wound with coiling in advance is assembled on coreplane 10, can easily be formed with coreplane 10 The coil that protuberance 10a～10e is magnetic core.Thus, with the situation phase utilizing each magnetic core to form each coil Ratio, it is also possible to reduce components number thus cut down cost and assemble man-hour.

And, by the excitatory coil 14 that gushes in multiple detection coil stimulating magnetic fields being set to one, and then Magnet exciting coil 14 and reflection-type are detected the coil rack utilized in coil 15 as lower lateral coil coil Skeleton 13 and integrated, it is possible to reduce components number thus cut down cost and assemble man-hour.

As it has been described above, the present invention is to utilize the multiple coils being wound around coiling on magnetic core and formed, measure The magnetic sensor for coin recognition of the magnetic characteristic of the coin utilized in coin recognizing method, is to for eliminating because of line The technology that the variability of sensor performance that the assembly error etc. of circle causes is useful.

Claims (6)

1. a magnetic sensor for coin recognition, it is characterised in that including:

The coreplane of one magnetic material plate body, forms the opening of passing through of coin identifying object Oral area, at prominent two protuberances of peristome described in the upper direction of described coin and at described coin Three protuberances that peristome described in lower direction is prominent；

Two infiltration types detection coils, the coiling using each protuberance of said two protuberance as core FCl；

Reflection-type detection coil, using the protuberance of the central authorities among described three protuberances as core FCl around Line；And

Magnet exciting coil, using described three protuberances as magnetic core, so that in described three protuberances are integrally incorporated in Side is wound with coiling,

Two infiltration type Magnetic Sensors are formed by said two infiltration type detection coil and described magnet exciting coil,

A reflection-type Magnetic Sensor is formed by described reflection-type detection coil and described magnet exciting coil,

And said two infiltration type Magnetic Sensor each with clip space opposed, with described coin Top the said two infiltration type that two protuberances are magnetic core detection coil and with described coin below The described magnet exciting coil that two protuberances be magnetic core corresponding with the two of top protuberances among three protuberances and Being formed, the magnetic circuit comprising each infiltration type Magnetic Sensor forms closed loop.

2. magnetic sensor for coin recognition as claimed in claim 1, it is characterised in that also include:

The upper lateral coil coil rack of two of resin-made cartridge type shape, has described two made above coin The through hole that individual protuberance is the most through,

Said two infiltration type detection coil is to be in the said two protuberance above coin the most through Each it is wound around coiling on lateral coil coil rack in said two under the state of each through hole and is formed 's.

3. magnetic sensor for coin recognition as claimed in claim 1, it is characterised in that also include:

Resinous lower lateral coil coil rack, has and makes described three protuberances below coin through Through hole,

Described reflection-type detection coil and described magnet exciting coil are to be in described three protuberances below coin It is wound around coiling on described lower lateral coil coil rack under the through state of described through hole and is formed 's.

4. magnetic sensor for coin recognition as claimed in claim 3, it is characterised in that

Described lower lateral coil coil rack has side convex shape,

Described reflection-type detection coil is by dividing winding coiling at the central projection of described side convex shape And formed, described magnet exciting coil is formed by being wound around coiling in the lower portion of described side convex shape.

5. magnetic sensor for coin recognition as claimed in claim 1, it is characterised in that

Described coreplane is formed by permalloy plate.

6. magnetic sensor for coin recognition as claimed in claim 1, it is characterised in that also include:

The upper lateral coil coil rack of two of resin-made cartridge type shape, has and makes said two protuberance each Another of through through hole, the connecting rod of one end of the fixing coiling being wound around and fixing described coiling The connecting rod of end；

The lower lateral coil coil rack of resin-made cartridge type shape, has and makes described three through passing through of protuberance The connection of the other end of through hole, the connecting rod of one end of the fixing coiling being wound around and fixing described coiling Bar；And

Circuit substrate, has the multiple through holes being connected with circuit,

Described coreplane has the shape of a part of otch of described plate body so that measure the hard of object Described peristome that coin passes through and described coreplane ft connection,

Each through hole of lateral coil coil rack in said two is each being come through said two protuberance Install lateral coil, the through hole of described downside bobbin for coil is mounted with through described three protuberances Described coreplane and described circuit substrate group when being contained in sensor box,

Each connecting rod, described lower lateral coil coil rack that described upper lateral coil coil rack has have Each through hole that each connecting rod having has from described circuit substrate surface is prominent to described sensor box side.